Hi, I've got a Rochester Quadrajet I don't know what car it came off of because I found it in a box. I am most likely going to do the rebuild and I have a kit, but I would just like to know what the average cost for a rebuild is. Thanks.
Look for a bunch of numbers on the side of the carb.... Write those down and do a search on Google...
Like Deuces said, the number will usually start with a "7" or "17". A basic kit will be $16-$50, that will get you started. Plenty of info on line about identifying them and tuning them. Most places give a list of carb#'s that a kit will do Sent from my iPhone using The H.A.M.B. mobile app
A very common issue with quadrajets is wear between the throttle shaft and the aluminium body of the carb. There is a kit that you can buy on the internet that allows you to ream the body and install sleeves that restore the throttle to as new condition. Don't do the carb without checking the throttle shaft wear and repairing same, or your rebuild will be just a waste of time and money. Depending on the year the carb was built, there may also be a problem of internal leaking from the primary and secondary jet wells. This can also be repaired by drilling and inserting plugs. This isn't a problem with all Quadrajets, but if you do have a leaker, it will lead to hard starting. I have found that using JB Weld to fix this problem is only a short term fix, and they will probably leak again. That is my experience. Bob
The two most common causes of driver dissatisfaction with a Q-jet with 50k or so miles are a worn secondary cam or a fatigued air valve spring or BOTH. NEITHER come in the cheap repair kits. Good information above about the well plugs and the throttle shaft clearance. Also, early Q-Jets often have inlet thread issues because the early inlet nuts only had a few threads. Jon.
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